Ballet Stéphane.
A note on the tensor rank of the multiplication in certain finite fields.Algebraic geometry and its applications, Proceedings of the first SAGA conference, 7-11 May 2007, Papeete, vol.5, World Scientific, Number Theory and Its Applications, editors J. Hirschfeld, J. Chaumine and R. Rolland, isbn 13 978-981-279-342-3, p.332--342, 2008.

Ballet Stéphane.
On the tensor rank of the multiplication in the finite fields.J. Number Theory 128, no. 6, 1795--1806, 2008.

Chaumine Jean, Hirschfeld James, Rolland Robert.
Algebraic geometry and its applications (dedicated to Gilles Lachaud on his 60th birthday).Proceedings of the First SAGA Conference, Series on Number Theory and Its Applications, World Scientific, Vol. 5, Jean Chaumine, James Hirschfeld & Robert Rolland (Editors), 2008.

Rolland Robert.Number of points of non-alsolutely irreducible hypersurfaces.Proceedings of the First SAGA Conference, Series on Number Theory and Its Applications, World Scientific, Vol. 5, p. 481-487, 2008.